Thermophysical and Excess Properties of Binary Mixtures of Dibutyl Ether and Components of Biodiesel

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-09-15 DOI:10.1007/s10953-024-01419-y

Dan Li, Xuena Zhang, Chunling Xin, Meifang Liu

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Abstract

Densities, dynamic viscosities, and refractive indices for four binary mixtures formed by dibutyl ether with ethyl caprylate, ethyl caprate, ethyl laurate or ethyl myristate over the whole composition range were measured at T=(293.15–323.15 K) and atmospheric pressure. The excess molar volume (V_m^E), viscosity deviation (Δη), and refractive index deviation (Δn_D) for the four systems are calculated and then correlated to the Redlich–Kister polynomial. The V_m^E and Δη values are all negative over the entire range of mole fractions. The absolute values of V_m^E for the mixtures increase with increasing temperature and the absolute values of Δη decrease with increasing temperature. The Δn_D values with the volume fraction for the four binary systems are all positive over the entire composition range. The experimental results can provide reliable data for the compatibility of biodiesels and their blended fuels.

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二丁基醚和生物柴油成分二元混合物的热物理性质和过量特性

在 T=(293.15-323.15 K) 和大气压力下，测量了二丁醚与辛酸乙酯、癸酸乙酯、月桂酸乙酯或肉豆蔻酸乙酯形成的四种二元混合物在整个组成范围内的密度、动态粘度和折射率。计算了四种体系的过量摩尔体积（VmE）、粘度偏差（Δη）和折射率偏差（ΔnD），然后将其与 Redlich-Kister 多项式相关联。在整个摩尔分数范围内，VmE 和 Δη 值均为负值。混合物的 VmE 绝对值随温度升高而增大，Δη 的绝对值随温度升高而减小。在整个成分范围内，四种二元体系随体积分数变化的 ΔnD 值均为正值。实验结果可为生物柴油及其混合燃料的兼容性提供可靠数据。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.